Comments on: Open–Cell vs Closed–Cell Foam Insulation http://www.justgreenhomes.net/2009/10/open%e2%80%93cell-vs-closed%e2%80%93cell-foam-insulation/ Your guide to an eco-friendly home. Sun, 20 Nov 2011 00:30:20 -0500 http://wordpress.org/?v=2.8.2 hourly 1 By: Dan Morrison http://www.justgreenhomes.net/2009/10/open%e2%80%93cell-vs-closed%e2%80%93cell-foam-insulation/comment-page-1/#comment-66 Dan Morrison Mon, 02 Nov 2009 19:21:54 +0000 http://www.justgreenhomes.net/?p=663#comment-66 I think it boils down to what problem you need to solve. I don;'t think either one is better than the other, just that each is better in certain circumstances. As you said, closed cell has a higher R-value per inch, so if space is limited, it may be the best choice. If space is not a limiting factor then the less expensive open cell foam may be a better choice. Also, open cell foam has a cleaner blowing agent, so at least from that standpoint, it's 'greener.' --Dan Morrison Managing editor, Green Building Advisor I think it boils down to what problem you need to solve. I don;’t think either one is better than the other, just that each is better in certain circumstances. As you said, closed cell has a higher R-value per inch, so if space is limited, it may be the best choice. If space is not a limiting factor then the less expensive open cell foam may be a better choice. Also, open cell foam has a cleaner blowing agent, so at least from that standpoint, it’s ‘greener.’

–Dan Morrison
Managing editor, Green Building Advisor

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